▶ Run
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>My Page</title> <style> body { background: #1e1e1e; color: white; font-family: Arial; } h1 { color: #00c853; text-align: center; } </style> </head> <body> <h1>Hello World!</h1> <p>This is a demo with syntax highlighting</p> </body> </html>